This circuit was published in an 80's American documentation, but it is still current. The power depends on the operational. The generated signal has a sinusoidal waveform.
This circuit is more sensitive than the previous one, in the sense that we can use weaker and more...
This 3-transistor timer was found in the January 1994 issue of Electronics Now magazine. The...
This circuit appears in other articles in this section, but it is very interesting. It is a...